RMC-1/RMC-1L/XMC-2 Owners Thread (Post Firmware v1.10)

[EmoBrent]

Jul 29, 2022 19:18:30 GMT -5 hsamwel said:

Jul 28, 2022 9:54:22 GMT -5 EmoBrent said:

Thanks Nic. I know it helps to be able to vent, especially to other Emotiva owners who share the experience. Regardless, it has been good for me to get on the forum to learn from users who want to be involved and try to provide updates when we can.


I still can't figure out why that Reavon universal player we got works in every setup and with every 1080p projector I tried it with but keeps giving you fits with yours and your processor! It still bugs me every time I see that player in the office. 

Sometimes it can be one of the connected devices disturbing. Usually one of the older HDMI 1.x.
It can also be so simple as a questionable cable. Which work sometimes, and sometimes not.
Even though being ”certified”.

People don’t think it can be the cable because it works most of the times. Also works fine if I
connect it to ”this or that”. What they often don’t think about is the total length from source
to processor and to the display device. Two 6ft cables suddenly becomes 12ft. Do the super
thin Amazon cables work the same with that length, even though being certified?

Nic's issue presents more like an HDCP conflict or EDID merge issue, not a cable bandwidth issue in his particular case.

I do think that our processors are more sensitive to cable bandwidth and length than other HDMI switchers that get their hands into the video processing/resampling a little bit more than just the OSD. In my experience, unless there is an HDMI cable that is just way out of date or out of spec regarding length, HDMI issues are more often caused by EDID and HDCP conflicts due to device configuration settings and growing complexity of HDMI spec. Projectors are of course pickier about HDMI and tend to use longer cables so can be more susceptible to cabling in general.

Our new 8K cert HDMI cables should be out in a week or so. I haven't tried the 3 meter samples yet, but the 1m and 2m lengths have been rock solid for all of the source devices and gaming consoles I have used so far and the run between processor and TV.

[thezone]

I have a couple of issues I'm hoping this new FW will fix.

Issue 1

Using my ATV4K directly into my Sony OLED the ATV4K reports that all formats and refresh rates are supported, but when I route the ATV4K through the XMC-2 the ATV4K reports the following format's are not supported:

4K HDR @60hz
4K HDR @59.94hz
4K HDR @50hz

So if I try to play any content on any app that has frame rate of 60,59.94 or 50 and match frame rate on "On" in the ATV4K the screen doesn't go black the video signal just drops out altogether and will not come back until I stop playback of the video.

NOTE: If I connect the ATV4K via HDMI directly to my TV (not through the XMC-2) all video plays back fine with match frame rate On.

Issue 2

There is a random crackling noise coming from the two rear speakers which requires a switch of audio mode or sometimes a hard reboot of the XMC-2 to fix.

Am I asking too much of FW3.0?

[ttocs]

Aug 2, 2022 20:13:42 GMT -5 thezone said:

I have a couple of issues I'm hoping this new FW will fix.

Issue 1
Using my ATV4K directly into my Sony OLED the ATV4K reports that all formats and refresh rates are supported, but when I route the ATV4K through the XMC-2 the ATV4K reports the following format's are not supported:
4K HDR @60hz
4K HDR @59.94hz
4K HDR @50hz

So if I try to play any content on any app that has frame rate of 60,59.94 or 50 and match frame rate on "On" in the ATV4K the screen doesn't go black the video signal just drops out altogether and will not come back until I stop playback of the video.

NOTE: If I connect the ATV4K via HDMI directly to my TV (not through the XMC-2) all video plays back fine with match frame rate On.

Issue 2
There is a random crackling noise coming from the two rear speakers which requires a switch of audio mode or sometimes a hard reboot of the XMC-2 to fix.

Am I asking too much of FW3.0?

I highly doubt FW3.0 will solve Issue 1 for you.

I've not had a problem with the ATV4K at any 4K/HDR/DV/ATMOS/Frame-Rate. They all work on mine with the ATV4K (Match Dynamic Range and Match Frame Rate are both On) connected to XMC-2, then the XMC-2 out to my Sony 950G. Netflix "Drive To Survive" is DV, ATMOS, 50Hz, and plays very well. Sorry, I can't duplicate Issue 1.

Regarding Issue 2, is there a show or movie that is a good example of something which produces the random crackling noise? I haven't had crackling while watching a show. But sometimes selecting a different app on the ATV4K and starting a show, or exiting an app can sometimes make a little snap sound, and it can happen in a Surround channel or a Height channel. This is something I think might have a chance of being better with FW3.0.

[thezone]

Aug 2, 2022 22:04:16 GMT -5 ttocs said:

Aug 2, 2022 20:13:42 GMT -5 thezone said:

I have a couple of issues I'm hoping this new FW will fix.

Issue 1
Using my ATV4K directly into my Sony OLED the ATV4K reports that all formats and refresh rates are supported, but when I route the ATV4K through the XMC-2 the ATV4K reports the following format's are not supported:
4K HDR @60hz
4K HDR @59.94hz
4K HDR @50hz

So if I try to play any content on any app that has frame rate of 60,59.94 or 50 and match frame rate on "On" in the ATV4K the screen doesn't go black the video signal just drops out altogether and will not come back until I stop playback of the video.

NOTE: If I connect the ATV4K via HDMI directly to my TV (not through the XMC-2) all video plays back fine with match frame rate On.

Issue 2
There is a random crackling noise coming from the two rear speakers which requires a switch of audio mode or sometimes a hard reboot of the XMC-2 to fix.

Am I asking too much of FW3.0?

I highly doubt FW3.0 will solve Issue 1 for you.

I've not had a problem with the ATV4K at any 4K/HDR/DV/ATMOS/Frame-Rate. They all work on mine with the ATV4K (Match Dynamic Range and Match Frame Rate are both On) connected to XMC-2, then the XMC-2 out to my Sony 950G. Netflix "Drive To Survive" is DV, ATMOS, 50Hz, and plays very well. Sorry, I can't duplicate Issue 1.

Regarding Issue 2, is there a show or movie that is a good example of something which produces the random crackling noise? I haven't had crackling while watching a show. But sometimes selecting a different app on the ATV4K and starting a show, or exiting an app can sometimes make a little snap sound, and it can happen in a Surround channel or a Height channel. This is something I think might have a chance of being better with FW3.0.

I just tried to play Drive to Survive on Netflix and it works fine thru the XMC-2, with OSD reporting 2160P/50. Is it possible that it is some apps do not support frame rate matching on the ATV4K?

[AudioHTIT]

Aug 3, 2022 2:23:53 GMT -5 thezone said:

Aug 2, 2022 22:04:16 GMT -5 ttocs said:

I highly doubt FW3.0 will solve Issue 1 for you.

I've not had a problem with the ATV4K at any 4K/HDR/DV/ATMOS/Frame-Rate. They all work on mine with the ATV4K (Match Dynamic Range and Match Frame Rate are both On) connected to XMC-2, then the XMC-2 out to my Sony 950G. Netflix "Drive To Survive" is DV, ATMOS, 50Hz, and plays very well. Sorry, I can't duplicate Issue 1.

Regarding Issue 2, is there a show or movie that is a good example of something which produces the random crackling noise? I haven't had crackling while watching a show. But sometimes selecting a different app on the ATV4K and starting a show, or exiting an app can sometimes make a little snap sound, and it can happen in a Surround channel or a Height channel. This is something I think might have a chance of being better with FW3.0.

I just tried to play Drive to Survive on Netflix and it works fine thru the XMC-2, with OSD reporting 2160P/50. Is it possible that it is some apps do not support frame rate matching on the ATV4K?

I believe the YouTube App on TV has been a holdout for not supporting Frame Rate Matching, however I just read it was fixed about a week ago, possibly in relation to the latest tvOS update.

[ttocs]

Aug 3, 2022 6:36:58 GMT -5 AudioHTIT said:

Aug 3, 2022 2:23:53 GMT -5 thezone said:

I just tried to play Drive to Survive on Netflix and it works fine thru the XMC-2, with OSD reporting 2160P/50. Is it possible that it is some apps do not support frame rate matching on the ATV4K?

I believe the YouTube App on TV has been a holdout for not supporting Frame Rate Matching, however I just read it was fixed about a week ago, possibly in relation to the latest tvOS update.

This is interesting. Things are not as easy as they were a long time ago when all one had to do to watch Creature Features on Saturday Night at 10:30pm was to turn on a tv and change the tuner to Channel 9.

So in addition to the hardware, each app must go along with supporting features and specs for everything to work out ok.

thezone can you give us the scenario which makes the video signal drop out so we can try it?

[doc1963]

Aug 3, 2022 6:36:58 GMT -5 AudioHTIT said:

Aug 3, 2022 2:23:53 GMT -5 thezone said:

I just tried to play Drive to Survive on Netflix and it works fine thru the XMC-2, with OSD reporting 2160P/50. Is it possible that it is some apps do not support frame rate matching on the ATV4K?

I believe the YouTube App on TV has been a holdout for not supporting Frame Rate Matching, however I just read it was fixed about a week ago, possibly in relation to the latest tvOS update.

They did... and I wish they hadn't.

Because of the wide variety of frame rates involved with content on YouTube, it's a total mess with "match frame rate" turned on. The number of "bonks" (black-outs) you get between content and ads, as well as from content to content, is ridiculous...

[Stephen Park]

Hi, I have some issues for RMC-1L(firmware 2.5) and Apple TV 4K (Latest model, with latest firmware).
When I watching AppleTV / Disney+ / Netflix and whatever especially Atmos contents, RMC-1 first shows it has TrueHD and ATMOS. Some time later, sometimes couple minute, sometimes over 20min later, suddenly sound drop like 1 or 2 seconds, and TrueHD change to PCM 7.1, at this point, overhead spekers(I have front 2 celling and rear 2 celling speakers) stop any sound, only 8 speaker(2 front, 1 center, 2 surround, 2 surround back and 1 subwoofer) working as it is showed as PCM 7.1.
When this happen, stop playing current contents and select other 5.1 contents and play, and stop again, back to play original Atmos contents, then it shows again TrueHD Atmos. After that, sometimes same problem again after certain time, sometimes this problem not happen again until I turn off all. And I turn on all again, play Atmos contents, same problem again.

I did change ATV 4K settings - 4K SDR, 4K HDR, 4K Dolby Vision, Matching contents for Dynamic range and frame rate, YCbCr 4.4.4 and 4.2.2, means I test and tried all settings which might cause this problems, change this and that, but same problem continue.

Is there anybody experience this same problem? Anyone fix this problem?

[AudioHTIT]

Aug 3, 2022 9:21:15 GMT -5 Stephen Park said:

Hi, I have some issues for RMC-1L(firmware 2.5) and Apple TV 4K (Latest model, with latest firmware).
When I watching AppleTV / Disney+ / Netflix and whatever especially Atmos contents, RMC-1 first shows it has TrueHD and ATMOS. Some time later, sometimes couple minute, sometimes over 20min later, suddenly sound drop like 1 or 2 seconds, and TrueHD change to PCM 7.1, at this point, overhead spekers(I have front 2 celling and rear 2 celling speakers) stop any sound, only 8 speaker(2 front, 1 center, 2 surround, 2 surround back and 1 subwoofer) working as it is showed as PCM 7.1.
When this happen, stop playing current contents and select other 5.1 contents and play, and stop again, back to play original Atmos contents, then it shows again TrueHD Atmos. After that, sometimes same problem again after certain time, sometimes this problem not happen again until I turn off all. And I turn on all again, play Atmos contents, same problem again.

I did change ATV 4K settings - 4K SDR, 4K HDR, 4K Dolby Vision, Matching contents for Dynamic range and frame rate, YCbCr 4.4.4 and 4.2.2, means I test and tried all settings which might cause this problems, change this and that, but same problem continue.

Is there anybody experience this same problem? Anyone fix this problem?

Could you be having Internet issues when this happens? Maybe something else in the house competing for bandwidth at the time? I tried Netflix Premium / 4K when I only had about 10/11 Mbps and got the well documented problem of the dialog jumping from Center to a Surround, or Height channel, I attributed it to the stream being starved (but don’t know definitively that was the cause), I had to drop that plan so that it wouldn’t try to deliver Atmos — though in my experience, when Netflix is working properly, it has the best sound … Ta-dum!

[doc1963]

Aug 3, 2022 9:21:15 GMT -5 Stephen Park said:

Hi, I have some issues for RMC-1L(firmware 2.5) and Apple TV 4K (Latest model, with latest firmware).
When I watching AppleTV / Disney+ / Netflix and whatever especially Atmos contents, RMC-1 first shows it has TrueHD and ATMOS. Some time later, sometimes couple minute, sometimes over 20min later, suddenly sound drop like 1 or 2 seconds, and TrueHD change to PCM 7.1, at this point, overhead spekers(I have front 2 celling and rear 2 celling speakers) stop any sound, only 8 speaker(2 front, 1 center, 2 surround, 2 surround back and 1 subwoofer) working as it is showed as PCM 7.1.
When this happen, stop playing current contents and select other 5.1 contents and play, and stop again, back to play original Atmos contents, then it shows again TrueHD Atmos. After that, sometimes same problem again after certain time, sometimes this problem not happen again until I turn off all. And I turn on all again, play Atmos contents, same problem again.

I did change ATV 4K settings - 4K SDR, 4K HDR, 4K Dolby Vision, Matching contents for Dynamic range and frame rate, YCbCr 4.4.4 and 4.2.2, means I test and tried all settings which might cause this problems, change this and that, but same problem continue.

Is there anybody experience this same problem? Anyone fix this problem?

Yes... and the Atmos audio dropouts are a know issue with the "Gen2" ATV4K. I've only had it occur with Netflix, never Disney+, Vudu or Movies Anywhere. I don't watch AppleTV+ too often, so I can't comment on that.

If you're hardwired, many have said that switching to wi-fi fixes the issue. I can say that, for me, doing that seems to have worked. Although since I have just moved to a new house (and my HT system is entirely disassembled), I can't say for sure whether that bandaid really stuck.

Rest assured that this is an Apple and/or app developer problem to figure out, not an issue with your processor.

Hope theis helps...

[EmoBrent]

Aug 3, 2022 2:23:53 GMT -5 thezone said:

Aug 2, 2022 22:04:16 GMT -5 ttocs said:

I highly doubt FW3.0 will solve Issue 1 for you.

I've not had a problem with the ATV4K at any 4K/HDR/DV/ATMOS/Frame-Rate. They all work on mine with the ATV4K (Match Dynamic Range and Match Frame Rate are both On) connected to XMC-2, then the XMC-2 out to my Sony 950G. Netflix "Drive To Survive" is DV, ATMOS, 50Hz, and plays very well. Sorry, I can't duplicate Issue 1.

Regarding Issue 2, is there a show or movie that is a good example of something which produces the random crackling noise? I haven't had crackling while watching a show. But sometimes selecting a different app on the ATV4K and starting a show, or exiting an app can sometimes make a little snap sound, and it can happen in a Surround channel or a Height channel. This is something I think might have a chance of being better with FW3.0.

I just tried to play Drive to Survive on Netflix and it works fine thru the XMC-2, with OSD reporting 2160P/50. Is it possible that it is some apps do not support frame rate matching on the ATV4K?

It is correct that not all apps support match framerate on the ATV4K properly. Youtube was already given as a good example of a common app that causes issues when trying to run match framerate. In the Sony TV, you can ensure that the HDMI input signal format is set to Enhanced plus Dolby Vision on the settings of the Sony TV for the HDMI input where the processor connects, often input 3 (ARC) on Sony TVs. May have to reboot the processor after making any HDMI setting change in the Sony TV, but that is one thing that can cause HDMI or EDID conflicts if the HDMI format was set to the default Standard in the Sony. Most HDMI streamers are not very good with matching framerate across all apps in my experience.

Edit: I do think it is *possible* that the next FW could help in cases like these, but this is more likely just a general HDMI device compatibility limitation based on how everyone reports their capabilities and the configuration of the devices with matching framerate, etc. Connecting an HDMI device directly to a display is always going to give you the most available resolutions and the fastest switching between framerates and dynamic range. Adding a third HDMI device (processor) to the circle complicates this immensely as the devices try to agree on their supported resolutions. 

The other issue with audio decoding (crackling?) when using the Apple TV is something that we have heard of and are at least tangentially aware of, seems to be somewhat display-dependent. The firmware update may also help with this kind of conflict, but based on what we know, it is just as likely to be something with how the ATV reports or sends the audio formats, maybe related to the other post about dropping Atmos and switching to PCM in the middle of playback. If you did have a certain program in a specific app where this always happens, that would be great to know so we can try to replicate. You can also reach out to [e-mail] for additional support with this information so that we can try to recreate it. A video recording of the noise is always helpful as well.

[ttocs]

Aug 3, 2022 9:21:15 GMT -5 Stephen Park said:

Hi, I have some issues for RMC-1L(firmware 2.5) and Apple TV 4K (Latest model, with latest firmware).
When I watching AppleTV / Disney+ / Netflix and whatever especially Atmos contents, RMC-1 first shows it has TrueHD and ATMOS. Some time later, sometimes couple minute, sometimes over 20min later, suddenly sound drop like 1 or 2 seconds, and TrueHD change to PCM 7.1, at this point, overhead spekers(I have front 2 celling and rear 2 celling speakers) stop any sound, only 8 speaker(2 front, 1 center, 2 surround, 2 surround back and 1 subwoofer) working as it is showed as PCM 7.1.
When this happen, stop playing current contents and select other 5.1 contents and play, and stop again, back to play original Atmos contents, then it shows again TrueHD Atmos. After that, sometimes same problem again after certain time, sometimes this problem not happen again until I turn off all. And I turn on all again, play Atmos contents, same problem again.

I did change ATV 4K settings - 4K SDR, 4K HDR, 4K Dolby Vision, Matching contents for Dynamic range and frame rate, YCbCr 4.4.4 and 4.2.2, means I test and tried all settings which might cause this problems, change this and that, but same problem continue.

Is there anybody experience this same problem? Anyone fix this problem?

Lots of folks have this problem! As Doc said, it's an Apple problem and it's been going on for a long time.

There's a group on another forum with majorly extensive Apple support phone calls amongst them, one guy in particular who started the thread and kept up the chatter on the forum as well as on other forums. When I jumped in to see what the problem was, I noticed that with WiFi there wasn't a problem which is why I didn't know what they were talking about. But then, when I switched to wired, the problem was bad. Switch back to WiFi, no problem. So I figured, maybe there's a problem with the wired circuit in the ATV4K, so I started to limit the bandwidth and found that if I limited the bandwidth to around 30Mbps the problem went away. The group reported this to their respective Apple Support contacts and the chatter on the forum mostly went away except for those who needed a wired connection and didn't know how to, or didn't want to, limit the bandwidth.

Since the first ATV4K it was said that the WiFi on the device was excellent, so I never considered going to a wired connection. It's just a bit strange that the wired connection seems to be exhibiting this issue.

[AudioHTIT]

Aug 3, 2022 11:39:42 GMT -5 ttocs said:

… so I started to limit the bandwidth and found that if I limited the bandwidth to around 30Mbps the problem went away …

That’s interesting, how did you do that?

[ttocs]

Aug 3, 2022 14:30:55 GMT -5 AudioHTIT said:

Aug 3, 2022 11:39:42 GMT -5 ttocs said:

… so I started to limit the bandwidth and found that if I limited the bandwidth to around 30Mbps the problem went away …

That’s interesting, how did you do that?

Using QoS on my Asus router.

I went to the Qos section, chose the ATV4K, then typed in the bandwidth number I wanted to try.

Maybe late tonight I can post some images showing this.

[AudioHTIT]

Aug 3, 2022 14:37:52 GMT -5 ttocs said:

Aug 3, 2022 14:30:55 GMT -5 AudioHTIT said:

That’s interesting, how did you do that?

Using QoS on my Asus router.

I went to the Qos section, chose the ATV4K, then typed in the bandwidth number I wanted to try.

Maybe late tonight I can post some images showing this.

Cool, never thought of using QoS for that 😎

[thezone]

Aug 3, 2022 11:38:50 GMT -5 EmoBrent said:

Aug 3, 2022 2:23:53 GMT -5 thezone said:

I just tried to play Drive to Survive on Netflix and it works fine thru the XMC-2, with OSD reporting 2160P/50. Is it possible that it is some apps do not support frame rate matching on the ATV4K?

Connecting an HDMI device directly to a display is always going to give you the most available resolutions and the fastest switching between framerates and dynamic range. Adding a third HDMI device (processor) to the circle complicates this immensely as the devices try to agree on their supported resolutions. 

Sounds like a good reason to buy a HDFury HDMI device and take the processor out of the equation.

[thezone]

Aug 3, 2022 11:38:50 GMT -5 EmoBrent said:

The other issue with audio decoding (crackling?) when using the Apple TV is something that we have heard of and are at least tangentially aware of, seems to be somewhat display-dependent. The firmware update may also help with this kind of conflict, but based on what we know, it is just as likely to be something with how the ATV reports or sends the audio formats, maybe related to the other post about dropping Atmos and switching to PCM in the middle of playback. If you did have a certain program in a specific app where this always happens, that would be great to know so we can try to replicate. You can also reach out to [e-mail] for additional support with this information so that we can try to recreate it. A video recording of the noise is always helpful as well.

FYI, I also experience this issue (crackling sound in the rear speakers) with the NVidia shield. I also don't have any issue with Atmos switching to PCM in the middle of playback from the ATV4K but I do notice that when I start an Atmos movie, the XMC-2 OSD initially reports Atmos as PCM but them switches to Atmos a couple of seconds later, but with no audio dropout. 

Among other apps, the crackling also occurs (randomly) during playback of Youtube 2.0, and as I always have the XMC-2 set to upmix 2ch by default to surround and it is only the rear channels that it affected I don't see it being anything other than the XMC-2 causing the issue. I will def try and catch it on video and send it in. 

[thezone]

Aug 3, 2022 11:39:42 GMT -5 ttocs said:

Aug 3, 2022 9:21:15 GMT -5 Stephen Park said:

Hi, I have some issues for RMC-1L(firmware 2.5) and Apple TV 4K (Latest model, with latest firmware).
When I watching AppleTV / Disney+ / Netflix and whatever especially Atmos contents, RMC-1 first shows it has TrueHD and ATMOS. Some time later, sometimes couple minute, sometimes over 20min later, suddenly sound drop like 1 or 2 seconds, and TrueHD change to PCM 7.1, at this point, overhead spekers(I have front 2 celling and rear 2 celling speakers) stop any sound, only 8 speaker(2 front, 1 center, 2 surround, 2 surround back and 1 subwoofer) working as it is showed as PCM 7.1.
When this happen, stop playing current contents and select other 5.1 contents and play, and stop again, back to play original Atmos contents, then it shows again TrueHD Atmos. After that, sometimes same problem again after certain time, sometimes this problem not happen again until I turn off all. And I turn on all again, play Atmos contents, same problem again.

I did change ATV 4K settings - 4K SDR, 4K HDR, 4K Dolby Vision, Matching contents for Dynamic range and frame rate, YCbCr 4.4.4 and 4.2.2, means I test and tried all settings which might cause this problems, change this and that, but same problem continue.

Is there anybody experience this same problem? Anyone fix this problem?

Lots of folks have this problem! As Doc said, it's an Apple problem and it's been going on for a long time.

There's a group on another forum with majorly extensive Apple support phone calls amongst them, one guy in particular who started the thread and kept up the chatter on the forum as well as on other forums. When I jumped in to see what the problem was, I noticed that with WiFi there wasn't a problem which is why I didn't know what they were talking about. But then, when I switched to wired, the problem was bad. Switch back to WiFi, no problem. So I figured, maybe there's a problem with the wired circuit in the ATV4K, so I started to limit the bandwidth and found that if I limited the bandwidth to around 30Mbps the problem went away. The group reported this to their respective Apple Support contacts and the chatter on the forum mostly went away except for those who needed a wired connection and didn't know how to, or didn't want to, limit the bandwidth.

Since the first ATV4K it was said that the WiFi on the device was excellent, so I never considered going to a wired connection. It's just a bit strange that the wired connection seems to be exhibiting this issue.

I only ever have my ATV4K connected via Ethernet and I never have this problem, speed test is around 60mbps (thru a powerline adapter). 

[jbrunwa]

Aug 3, 2022 17:41:53 GMT -5 thezone said:

Aug 3, 2022 11:39:42 GMT -5 ttocs said:

Lots of folks have this problem! As Doc said, it's an Apple problem and it's been going on for a long time.

There's a group on another forum with majorly extensive Apple support phone calls amongst them, one guy in particular who started the thread and kept up the chatter on the forum as well as on other forums. When I jumped in to see what the problem was, I noticed that with WiFi there wasn't a problem which is why I didn't know what they were talking about. But then, when I switched to wired, the problem was bad. Switch back to WiFi, no problem. So I figured, maybe there's a problem with the wired circuit in the ATV4K, so I started to limit the bandwidth and found that if I limited the bandwidth to around 30Mbps the problem went away. The group reported this to their respective Apple Support contacts and the chatter on the forum mostly went away except for those who needed a wired connection and didn't know how to, or didn't want to, limit the bandwidth.

Since the first ATV4K it was said that the WiFi on the device was excellent, so I never considered going to a wired connection. It's just a bit strange that the wired connection seems to be exhibiting this issue.

I only ever have my ATV4K connected via Ethernet and I never have this problem, speed test is around 60mbps (thru a powerline adapter). 

Yeah, 60 mbps is pretty slow by todays standards (but still 2x what you need for 4k movies, so that's good), that's probably why its working for you. It seems to happen with fast speeds where the data arrives in big chunks with long time between chunks, as opposed to small but more frequent chunks. So it seems to depend on what's upstream from the ATV4K and how data is being buffered. But whatever the reason, if it happens to a given ATV4K, wireless seems to be a good workaround. Also I hear it happens more for gen 2 than gen 1 ATV4K units.

[ttocs]

Aug 3, 2022 20:47:46 GMT -5 jbrunwa said:

Aug 3, 2022 17:41:53 GMT -5 thezone said:

I only ever have my ATV4K connected via Ethernet and I never have this problem, speed test is around 60mbps (thru a powerline adapter). 

Yeah, 60 mbps is pretty slow by todays standards (but still 2x what you need for 4k movies, so that's good), that's probably why its working for you. It seems to happen with fast speeds where the data arrives in big chunks with long time between chunks, as opposed to small but more frequent chunks. So it seems to depend on what's upstream from the ATV4K and how data is being buffered. But whatever the reason, if it happens to a given ATV4K, wireless seems to be a good workaround. Also I hear it happens more for gen 2 than gen 1 ATV4K units.

All correct. With faster wired speeds the data rushes in, then stops for around 8 seconds, then another fast rush.

With the speed limited to 30Mbps the data is almost continuous within a range of between 18-29Mbps. So it's a slower rise and fall and rise and fall, continuously, and is still more speed than is needed for 4K/DV/ATMOS from the ATV4K. Faster speeds exacerbates the problem for those who have the problem, but as has been mentioned, not every system has the problem. A lot of those I've communicated with who have more problems with this issue have Marantz processors, so I initially thought it was a Marantz issue, but it's not, just like it's not an Emotiva problem either.

The earliest batches of ATV4K-2021 seem to be the ones affected the most.